Calamine Brass
Alloy of copper with zinc, produced by heating fragments of copper with charcoal and a zinc ore, calamine or smithsonite, in a closed crucible to red heat (about 1,300� C, or 2,400� F). The ore is reduced to a zinc vapour that diffuses into the copper. Apparently invented in Asia Minor, this method of brass manufacture was common from the 1st millennium BC. In Roman times a brass industry was
posted by TiredKnife @ 7:16 AM
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